<template>
    <div class="list" ref="wrapper">
      <div>
        <div class="area">
          <div class="title border-topbottom">当前城市</div>
          <div class="button-list">
            <div class="button-wrapper">
              <div class="button">{{this.city}}</div>
            </div>
          </div>
        </div>
        <div class="area">
          <div class="title" border-topbottom>热门城市</div>
          <div class="button-list">
            <div class="button-wrapper" v-for="city of hotCities" :key="city.id"
                 @click="changeClickCity(city.name)">
              <div class="button">{{city.name}}</div>
            </div>
          </div>
        </div>
        <div class="area"
             v-for="(item,key) of cities"
             :key="item.key"
             :ref="key">
          <div class="title border-topbottom">{{key}}</div>
          <div class="item-list">
            <div class="item border-bottom" v-for="innerItem of item"
                 :key="innerItem.id"
                 @click="changeClickCity(innerItem.name)"
            >{{innerItem.name}}</div>
          </div>
        </div>
      </div>
    </div>
</template>

<script>
import Bscroll from 'better-scroll'
import {mapMutations, mapState} from 'vuex'
export default {
  name: 'Citylist',
  props: {
    hotCities: Array,
    cities: '',
    letter: String
  },
  computed: {
    ...mapState(['city'])
  },
  methods: {
    changeClickCity (city) {
      // this.$store.commit('changeCity', city)
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  watch: {
    letter: function () {
      if (this.letter) {
        // console.log(this.$refs[this.letter][0])
        const postion = this.$refs[this.letter][0]
        this.scroll.scrollToElement(postion)
      }
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  }
}
</script>

<style lang="stylus" scoped>
  @import "~styles/varibles.styl"
  .border-topbottom:before
    border-color #ccc
  .border-topbottom:after
    border-color #ccc
  .border-bottom:before
    border-color #ccc
  .list
    position absolute
    top 1.58rem
    left 0
    right 0
    bottom 0
    overflow hidden
  .title
    line-height .54rem
    background #eeee
    padding-left .2rem
    color #666
    font-size .26rem
  .button-list
    display flex
    flex-wrap wrap
    padding .1rem .6rem .1rem .1rem
    .button-wrapper
      width 33.3%
      .button
        display flex
        margin .1rem
        padding .1rem 0rem
        justify-content center
        align-items center
        border .02rem solid #ccc
        border-radius .06rem
  .item-list
    .item
      line-height .76rem
      padding-left .2rem
</style>
